Talib, M. B., A. A. Baredhwan, K. Alenazi, A. Almagooshi, A. M. Alqahtani, S. A. Alsobayeg, S. Alhazmi, W. Awad, A. S. Alamri, P. P. Jaganathan, M. N. Abdu, and L. A. Khan. “Clinical Characteristics of Covid-19 Patients at King Saud Medical City: A Retrospective Study”. INTERNATIONAL JOURNAL OF ENDOCRINOLOGY (Ukraine), vol. 17, no. 1, Mar. 2021, pp. 3-10, doi:10.22141/2224-0721.17.1.2021.226424.